Roof fans with IEC standard motor (Type: DVNF/S, DVN/S)

The casing of the Rosenberg roof fans (DVNF/S, DVN/S) consists of seawater-resistant aluminium and a base frame with integrated inlet cone.

model - DVNF/DVN

up to size 500: Base frame with integrated inlet cone made of galvanised sheet steel

from size 560: Base frame with integrated inlet cone made of galvanised sheet steel and additional plastic coating

model - DVNFS/DVNS

Casing with integrated sound insulation (S) ; base frame with integrated inlet cone made of galvanised sheet steel and additional plastic coating

up to size 500: Base frame with integrated inlet cone made of galvanised sheet steel

from size 560: Base frame with integrated inlet cone made of galvanised sheet steel and additional plastic coating

Efficiency-optimised high performance impellers with backward curved blades made of aluminium. The impellers together with the impeller hub are dynamically balanced on two levels with the rotor according to quality level G 2,5 / G 6,3 as per DIN ISO 21940-11. The impellers are mounted overhung on the shaft of an IEC standard motor type B5.

model - DVNF/DVNFS

The electrical connection is mounted on the housing by a frequency converter. With model -GS the electrical connection mounted directly by the ON/Off-switch.

model - DVN/DVNS

The wiring box of the motor is easily accessible. The motor has to be connected according to the wiring diagram and in accordance with valid regulations and local laws. With model -GS the electrical connection mounted directly by the ON/Off-switch.